<!--********************************************************************
* Copyright© 2000 - 2018 SuperMap Software Co.Ltd. All rights reserved.
*********************************************************************-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title data-i18n="resources.title_lianjia"></title>
    <script type="text/javascript" src="../js/include-web.js"></script>
    <style>
        body {
            margin: 0;
            overflow: hidden;
            background: #fff;
            width: 100%;
            height: 100%;
            position: absolute;
            top: 0;
        }
        #map {
            margin: 0 auto;
            width: 100%;
            height: 100%
        }

        #titleContainer {
            width: 100%;
            position: absolute;
            top: 30px;
            color: white;
            z-index: 999;
            font-size: 20px;
            font-weight: bold;
            text-align: center;
        }

        #titleContainer > #title {
            letter-spacing: 0.1em;
        }
    </style>
</head>
<body>
<div id="map"></div>
<div id="titleContainer">
    <h2 id="title" data-i18n="resources.title_lianjia"></h2>
</div>
<script type="text/javascript" include="echarts" src="../../dist/leaflet/include-leaflet.js"></script>
<script>
    var host = window.isLocal ? window.server : "http://support.supermap.com.cn:8090";
    var baseurl = host + "/iserver/services/map-china400/rest/maps/ChinaDark";
    var dataUrl = "https://www.supermapol.com/iserver/services/map_201802beijingfangjia/rest/maps/2018年2月北京房价_链家小区参考价_格网";
    var map = L.map('map', {
        center: [39.88076184888246, 116.42898559570312],
        zoom: 11,
        maxZoom: 18,
        minZoom: 6
    });
    L.supermap.tiledMapLayer(baseurl).addTo(map);
    query();

    function query() {
        var param = new SuperMap.QueryBySQLParameters({
            queryParams: {
                name: "lj_xq_500gw@BJ_201802LJ",
                attributeFilter: "SMID > 0"
            },
            fromIndex: 0,
            toIndex: 10000,
            maxFeatures: 10000
        });
        L.supermap.queryService(dataUrl).queryBySQL(param, function (serviceResult) {
            var result = serviceResult.result;
            var features = result.recordsets[0].features.features;
            //构造数据
            var data = [];
            for (var i = 0; i < features.length; i++) {
                var pointLeftTop = coordsTo4326(features[i].geometry.coordinates[0][0][0]);
                var pointRightBottom = coordsTo4326(features[i].geometry.coordinates[0][0][2]);
                var value = parseFloat((features[i].properties.average_price_1 / 10000).toFixed(2));
                data.push(pointLeftTop.concat(value).concat(pointRightBottom));
            }
            var COLORS = ['#e0dffb', '#8c88ef', '#5954e8', '#221cd2', '#17138d', '#0c0a48', '#030314', 'red'];
            var option = {
                tooltip: {},
                visualMap: {
                    type: 'piecewise',
                    inverse: true,
                    top: 110,
                    left: 10,
                    pieces: [{
                        gt: 0, lte: 2, color: COLORS[0]
                    }, {
                        gt: 2, lte: 4, color: COLORS[1]
                    }, {
                        gt: 4, lte: 6, color: COLORS[2]
                    }, {
                        gt: 6, lte: 8, color: COLORS[3]
                    }, {
                        gt: 8, lte: 10, color: COLORS[4]
                    }, {
                        gt: 10, lte: 15, color: COLORS[5]
                    }, {
                        gt: 15, lte: 20, color: COLORS[8]
                    }, {
                        gt: 20, lte: 28, color: COLORS[9]
                    }],
                    borderColor: '#ccc',
                    borderWidth: 2,
                    backgroundColor: '#eee',
                    dimension: 2,
                    inRange: {
                        color: COLORS,
                        opacity: 0.7
                    }
                },
                series: [{
                    type: 'custom',
                    coordinateSystem: "leaflet",
                    data: data,
                    renderItem: renderItem,
                    animation: false,
                    itemStyle: {
                        emphasis: {
                            color: 'pink'
                        }
                    },
                    encode: {
                        tooltip: 2
                    }
                }]
            };
            // 自定义渲染
            function renderItem(params, api) {
                pointLeftTop =map.latLngToContainerPoint(new L.LatLng(api.value(1),api.value(0)));

                pointRightBottom = map.latLngToContainerPoint(new L.LatLng(api.value(4),api.value(3)));

                return {
                    type: 'rect',
                    shape: {
                        x: pointLeftTop.x,
                        y: pointLeftTop.y,
                        width: pointLeftTop.x - pointRightBottom.x,
                        height: pointLeftTop.y - pointRightBottom.y
                    },
                    style: api.style({
                        stroke: 'rgba(0,0,0,0.1)'
                    }),
                    styleEmphasis: api.styleEmphasis()
                };
            }
            function coordsTo4326(coords) {
                var lngLat = L.CRS.EPSG3857.unproject(L.point(coords));
                return [lngLat.lng, lngLat.lat];
            }
            L.supermap.echartsLayer(option).addTo(map);
        });
    }
</script>
</body>
</html>